- fixed compile error

(public interfaces need their own file, apparently)

Java11.java

@@ -12,6 +12,8 @@ import java.util.function.Predicate;
 import java.util.stream.Collectors;
 
 class Java11 {
+
+
    public static void main(String[] args) {
       ////////
       // 1. //
@@ -159,4 +161,4 @@ interface InterfaceWithPrivateMethods {
 @Documented
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.PARAMETER)
-public @interface Nonnull {}
+@interface Nonnull {}